Congratulations on your Bluthner! Thank you for posting about it and including all of the photos and the video which makes everything come alive for those of us here on PW. What a grand piano! She's (He's?) a beauty! She sounds beautiful.
Here's a link to something you may find of interest - two vintage Bluthners that are part of the Frederick's Historic Piano Center Collection: a Bluthner built in 1877 "with an unusual string layout" and also one built in 1907 with" a very sweet, clear, even tone…that can produce an almost inaudible pianississimo…" that is described as being "somewhat startling". http://frederickcollection.org/Bluth1877.htm
There are only a few photos of the 1877 Bluthner on Frederick's website, but one clearly shows the plate which looks significantly different from your Bluthner. I wonder how much of a difference this makes in the character of the piano?
The plate of the 1907 Bluthner looks closer to your plate, but still different?
Frederick's, btw, is not just a showplace where all you can do is look at the pianos. It is not a museum, it is a "Study Center" located in Ashburnham, Massachusetts and the pianos are still "alive". The founders, Edmund Michael Frederick and Patricia Humphrey Frederick restore and keep the pianos in playing order and the pianos are played. Every year during concert season the performing pianists choose particular pianos in the collection to play and tours are also given when visitors are given the opportunity to actually play the pianos for themselves.
A group of us PW members visited the Study Center back in September 2004 with Frank Baxter. Frederick's is wonderful and well worth visiting. Of course, now with Covid -19 events the concerts have been halted. Here is the link to our visit back in 2004 for anyone who may be interested in hearing our impressions of the tour and of the pianos: http://forum.pianoworld.com/ubbthre...toric-piano-study-center.html#Post922160
When our PW group visited there was a CD available played on a 1907 Bluthner. I don't see any info on the website about this, but for anyone who may be interested, if you contact the Frederick's, I assume they'd know if it is still available.
Congrats, again on your Bluthner, pierreluigi!